NYLON ………IN THE 1930’S A/ INVENTED B/ WAS INVENTED C/IS...

4/ - DE KIEM TRA HOC KY II CO DAP AN
Lớp 8 DE KIEM TRA HOC KY II CO DAP AN

4/ Nylon ………in the 1930’s

A/ invented B/ was invented C/is invented D/ has been invented